(( WARNING )) DYNOFLO ENGINES BAD DEALINGS

Hi Guy's Take a look at the pics below and take a guess at what happened.
I will give out more info and pics as the post progresses .
First clue is its out of a Large cube SBC Good Luck and I cant wait to here your answers.

i would think if some one put the engine togather right with enough clearance from the rods to block and torqued everything right it did't hit the block.that would be a rookie mistake.the only why the rod makes contact with something is the main caps broke or block,or crank but that's rare.if the piston broke there wouldn't be the big contact spot because aluinium woulnd't do that to steel and no marks on the small end of rod.so does it come down to the roller lifter broke and pined between the rod and the block on down stroke and pulled the rod apart then the other bolt hit.the bearing in the pic don't have anything to do with it.the bearing slide after the rod was contacted.the rod was number 2,4,6,8.i will have more info if you take pics of cam and lifters.jeff

I'm with you i think lifter or oil pump broke off depending on what pump you ran i have seen some of the melling small block pumps brake also have seen the tip of a roller rocker brake and get caught in there to.

If's it's out of the 454" motor, i know you've already been running it, so i would say the oil pump quit, if not that a ring or ring land broke and the cylinder seized the piston causing the rod damage. That is if this is the only culprit/damage. could have broken a valve or spring, but that would be my last choice.

i would think the rod bolts or main caps were left loose.i don't what to be a ass hole but ho ever put the bottom end togather screwed up. this is a classic case of OOPS i was drinking some beer. if the treads weren't pulled out and the bolts aren't broken then the bolts were never tighten.i have been building engine for 20yrs and have seen this before.good luck jeff